NAVITRON SYSTEMS LTD NT921 MKII SMALL VESSEL AUTOPILOT

Specifically designed for small professional vessel use (typically 11-20m LOA) the NT921 MKII Autopilot provides a powerful combination of steering system control and interface facilities based on an extremely intelligent Control Unit which is clearly marked and simple to operate.

Model NT921 MKII (259 x 176 x 115mm)

Accordingly, the NT921 MKII offers Navitron steering expertise in a robust and compact package which is purpose designed to communicate as efficiently with the radar and GPS as with the steering gear due to the incorporation of special features which include: -

Straightforward operation is a key feature of the NT921 MKII thus operator controls are kept to a minimum and are clearly identified by control panel markings which are red backlit for night viewing via a variable intensity illumination control. A conventionally marked Course Setter provides simple course selection backed up by dedicated LCD displays of heading and rudder angle information which, combined with other indicators, provide permanent visual confirmation of Autopilot status and performance. When connected to receive Cross Track Error (CTE) or Heading Steer Command (HSC) data transmitted from a proprietary source (GPS, Track Plotter System etc) the RadioNav section may be engaged by simple switch operation (OFF/LO/HI) to 'track' steer between predetermined waypoints stored in the GPS / Trackplotter. Suitable for console or bracket mounting, the NT921 MKII Control Unit is intended for wheelhouse location and is immediately compatible with GPS compasses transmitting NMEA 0183 heading data in addition to being supplied complete with Heading Sensor Coil and Rudder Reference Unit for installation to solenoid hydraulic systems.

All Navitron Autopilot Systems are covered by comprehensive warranty terms and incorporate the following features as standard: -

NAVITRON SYSTEMS LTD (Registered in England No. 2607869) Osborn House, 25E Brockhampton Lane, Havant, Hampshire PO9 1JT TEL: (UK) 023 9249 8740 FAX: (UK) 023 9249 8783 (INT) +44 23 9249 8740 (INT) +44 23 9249 8783 E-mail: sales@navitron.co.uk Web: www.navitron.co.uk

NT921 MKII Outline Specifications

NAVITRON SYSTEMS LTD NT951G SMALL SHIP AUTOPILOT

ISO 11674 & IMO A342 (IX) as

amended by MSC 64/67 Annex 3 Fully Type Approved Notified Body 0191/05

Purpose designed by Navitron Systems Limited for professional use on Magnetic and/or Gyro based commercial vessels of all types to approximately 2000 gross registered tonnes, the Navitron NT951G is a powerfully equipped and technologically advanced Autopilot which remains simple to operate.

. Equally at home in new build and retrofit applications over an exceptionally wide range (fishing vessels, tugs, dredgers, ferries, coasters, survey and support units etc.) the NT951G Autopilot offers traditional Navitron performance and reliability reinforced by full type approvals to latest IMO and IS0 standards. Comprehensively intelligent, standard features of the NT951G Control Unit include Dual Mag and Gyro Heading Inputs, Serial data outputs for Radar Stabilisation/Nav Computer/VDR use etc, fully Automatic Stability Compensation to accommodate Two Speed Rudder Systems and programmable Rate Of Turn. Simple to operate via a traditional and clearly marked rotary Course Setter, the NT951G is immediately compatible with existing Navitron equipment including Watch Alarms, Heading Repeaters, Rudder Angle Indicators and Power Steer Controls.

NAVITRON SYSTEMS LTD (Registered in England 2607869) Osborn House, 25E Brockhampton Lane, Havant, Hampshire PO9 1JT TEL: (UK) 023 9249 8740 FAX: (UK) 023 9249 8783 (INT) +44 23 9249 8740 (INT) +44 23 9249 8783 E-mail: sales@navitron.co.uk Web: www.navitron.co.uk

NT951G Outline Specifications

All Navitron Autopilot systems are covered by comprehensive warranty terms and are supplied standard complete with Mag Heading Sensor Coil, Rudder Reference Unit and Control Unit incorporating 11 - 40Vdc 5A rated solid state switches for the control of solenoid hydraulic steering systems. Various optional equipment includes dual solenoid and dual channel analogue outputs (-10V to +10V) for independent dual rudder and analogue steering system control respectively.

Inputs: - Outputs: -

Supply Voltage Range 11-40Vdc Power Consumption 2.5W (@24Vdc)

Illumination Max 8.1W (@24Vdc)

Mag Heading Input Ports

Navitron Heading Sensor Coil mounted

above/below Existing Mag Compass

Coil type HSC1 or

HSC2

Resolution 0.25° NMEA 0183 Heading

Sentence from Electronic Compass (Priority as shown)

XX HDM XX HDG XX HCC XX HDT

Resolution 0.1°

NMEA 0183 (Isolated RS422) Update

Rate Selectable @

1Hz, 10Hz or 20Hz Hz Mag Gyro

1

HCHDM HCHDG APHDM APHDG

HEHDT AGHDT

10

Sentence types

(Mag/Gyro

HCHDM (5Hz) HCHDG

HEHDT ADHDT (5Hz)

v Update Rate)

20 HCHDM HEHDT Resolution 0.1° Autopilot

Status Data 1 APRSA APHTD

AGRSA AGHTD

Gyro Heading Input Ports Isolated 1:1 Synchro

available in Gyro 400Hz Excitation

from Autopilot Resolution 0.25°

NMEA 0183 Heading Sentence from Gyro (Priority as shown)

XX HDT XX HDM XX HDG XX HCC

Resolution 0.1°

Follow Up Rate (Minimum) All Heading Input types 30° / Sec

Operator Controls Yaw Illumination

Rudder Mode Switch Counter Rudder Off Course Alarm

Rudder Limit Gyro/Mag Selector Turn Rate Auto Trim

Operating Temperature Range -20 to +60 °C

Furuno Format

Update Rate Selectable @ 5Hz or 40Hz

Resolution Selectable @ 0.166° or 0.1°

Signal Amplitude Selectable @ 5Vdc or 12Vdc

Step by Step

Steps per Degree Selectable @ 3, 6,12 or 24 Signal Amplitude 5Vdc

Navitron Serial Data To Navitron Digital Repeaters Etc

Solenoid Switching

Polarity Selectable Common +VE/-VE Max Rating 5A @ 40Vdc

Panel Alarms Power Fail Off Course

Steering System Fail Rudder Limit Heading Input Fail Turn Rate Limit Alarm Test facility Remote Engaged

Compass Safe Distance 0.6m

Mechanical Data Width 297mm Height 176mm

Depth – behind bezel 110mm Weight 3.3kg

NT951G Autopilot Input/Output Specifications

NAVITRON SYSTEMS LTD NT991G MK2 GYRO/MAG AUTOPILOT

Designed and developed by Navitron Systems Ltd for commercially operated ocean going vessels of all types from typically 1800 gross registered tonnes upwards, the Navitron NT991G MK2 Autopilot is fully type approved to latest IMO and ISO standards.

Model NT991G MK2 Dims 296mm x 175mm x 110mm (depth) Available in various system configurations the NT991G MK2 can be supplied for immediate compatibility with most gyro compass and steering system types rendering it an extremely cost effective solution for new build and retrofit installations. Additionally, the NT991G MK2 Autopilot features automatic Waypoint Steering based on “Heading to Steer” serial data received from proprietary Track Plotters/ECDIS systems etc. ($HTC, $HSC, $APB sentences). Comprehensively intelligent, other standard features include Dual Mag and Gyro Heading Inputs, serial data outputs for Radar Stabilisation / Nav Computer / VDR use etc, fully Automatic Stability Compensation to accommodate Two Speed Rudder Systems and programmable Rate of Turn in degrees per minute. Simple to operate via a traditional and clearly marked rotary Course Setter, the NT991G MK2 is immediately compatible with existing Navitron equipment including Watch Alarms, Heading Repeaters, Rudder Angle Indicators and Power Steer Controls.

NAVITRON SYSTEMS LTD (Registered in England No. 2607869) Osborn House, 25E Brockhampton Lane, Havant, Hampshire PO9 1JT TEL: (UK) 023 9249 8740 FAX: (UK) 023 9249 8783 (INT) +44 23 9249 8740 (INT) +44 23 9249 8783 E-mail: sales@navitron.co.uk Web: www.navitron.co.uk

█ Full P.I.D Intelligence. █ Servo Drive Heading Repeater (Standby mode). █ AutoTrim (Automatic Permanent Helm). █ Digital Heading and ROT data display. █ Bargraph and digital Rudder Angle display. █ Operator variable control panel illumination. █ 11 - 40Vdc Power Supply compatible. █ Solid State Output stages ( 11 – 40 Vdc / 5A max.) █ Fully programmable installation parameters.

■ Dual Mag Inputs : - Sensor Coil and/or NMEA. ■ Dual Gyro Inputs : - 1:1 Synchro and/or NMEA. ■ Track Steer : -

Multi waypoint steering via Plotter/ECDIS data.

■ Programmable ROT : - (Degrees/Min). ■ Built in RadioNav and Off

Course Alarm. ■ Automatic Stability : - Compensates for Rudder speed variations. ■ Heading / VDR out : - NMEA, Step by Step and Furuno Heading. $HTD & $RSA VDR

Fully Type Approved Notified Body 0191 / 05

ISO 11674 & IMO A342 (IX) as amended by MSC 64/67 Annex 3

NT991G MK2 Outline Specifications

All Navitron Autopilot systems are covered by comprehensive warranty terms and are supplied standard complete with Mag Heading Sensor Coil, Rudder Reference Unit and Control Unit incorporating 11 – 40Vdc 5A rated solid state switches for the control of solenoid hydraulic steering systems. Various optional equipment includes dual solenoid and dual channel analogue outputs (-10V to +10V) for independent dual rudder and analogue steering system control respectively.

Inputs: -

Supply Voltage Range 11-40Vdc Power Consumption 2.5W (@24Vdc)

Illumination Max 8.1W (@24Vdc)

Mag Heading Input Ports Navitron Heading Sensor

Coil mounted above/below Existing Mag Compass

Coil type HSC1 or

HSC2 Resolution 0.25°

NMEA 0183 Heading Sentence from Electronic

Compass (Priority as shown)

XX HDM XX HDG XX HCC XX HDT

Resolution 0.1°

Gyro Heading Input Ports Isolated 1:1 Synchro

available in Gyro 400Hz Excitation

from Autopilot Resolution 0.25°

NMEA 0183 Heading Sentence from Gyro (Priority as shown)

XX HDT XX HDM XX HDG XX HCC

Resolution 0.1°

Track Data XXHTC, XXHSC, XXAPB

Follow Up Rate (Minimum)

All Heading Input types 30° / Sec

Operator Controls Yaw Illumination

Rudder Mode Switch Counter Rudder Off Course Alarm

Rudder Limit Gyro/Mag Selector Turn Rate Auto Trim

Operating Temp Range -20 to +60 °C Compass Safe Distance 0.6m

Mechanical Data

Width 297mm Height 176mm

Depth – behind bezel 110mm Weight 3.3Kg

Outputs: -

NMEA 0183 (Isolated RS422) Update

Rate Selectable @

1Hz, 10Hz or 20Hz Hz Mag Gyro

1

HCHDM HCHDG APHDM APHDG

HEHDT AGHDT

10 HCHDM (5Hz) HCHDG HEHDT

AGHDT (5 Hz)

Heading Sentence

types (Mag/Gyro

v Update Rate)

20 HCHDM HEHDT Resolution 0.1° Autopilot

Status Data 1 APRSA APHTD

AGRSA AGHTD

Furuno Format

Update Rate Selectable @ 5Hz or 40Hz

Resolution Selectable @ 0.166° or 0.1°

Signal Amplitude Selectable @ 5Vdc or 12Vdc

Step by Step

Steps per Degree Selectable @ 3, 6,12 or 24 Signal Amplitude 5Vdc

Navitron Serial Data To Navitron Digital Repeaters Etc

Solenoid Switching

Polarity Selectable Common +VE/-VE Max Rating 5A @ 40Vdc

Panel Alarms Power fail Off Course

Steering System Fail Rudder Limit Heading Input Fail Turn Rate Limit Alarm Test facility Remote Engaged

NT991G MK2 Autopilot Input/Output Specifications

NT951GOutline Specifications

NT991G MK2Outline Specifications